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Optimize Apache & PHP-FPM memory for lower idle usage
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Switch PHP-FPM from pm=dynamic to pm=ondemand (zero idle workers),
auto-detect container memory via cgroups to calculate appropriate
limits, and generate Apache MPM config at runtime. All tuning values
are now overridable via environment variables.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
jknapp
2026-02-25 18:52:15 -08:00
parent a153385d8f
commit 87c4f2befc
5 changed files with 144 additions and 19 deletions
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17
scripts/create-php-config.sh
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@@ -12,12 +12,15 @@ listen = /run/php-fpm/www.sock
listen.owner = apache
listen.group = apache
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3
pm.max_requests = 500
pm = ${PHP_FPM_PM}
pm.max_children = ${PHP_FPM_MAX_CHILDREN}
pm.max_requests = ${PHP_FPM_MAX_REQUESTS}
pm.process_idle_timeout = ${PHP_FPM_PROCESS_IDLE_TIMEOUT}
; Settings used when pm = dynamic (fallback if user overrides FPM_PM)
pm.start_servers = ${PHP_FPM_START_SERVERS}
pm.min_spare_servers = ${PHP_FPM_MIN_SPARE}
pm.max_spare_servers = ${PHP_FPM_MAX_SPARE}
slowlog = /etc/httpd/logs/error_log
request_slowlog_timeout = 3s
@@ -28,4 +31,4 @@ php_value[soap.wsdl_cache_dir] = /var/lib/php/wsdlcache
EOF
exit 0
exit 0